Locomotive



A ril 13,1926. J MOHUN 1,580,266

LOCOMOTIVE Filed July 16, 1923 2 sheets-sheet 1 I April 13 1926. 1,580,266

J. L. MOH UN LOCOMOTIVE Filed July 16, 1923 2 Sheets-Sheet 2 llllllll III of Nebraska,

Patented Apr. 13, 1926.

Jorm' L. Monmv, or OMAHA, NEBRASKA.

LOGOMOTIVE.

Application filed July- 16, 1923. Serial No. 651,828

To aZZ whom it may concern:-

lie it known that 1, JOHN L. Morton, a citizen ot' thewUnited States, residing at On'iaha, in the county oi Douglas-and State have invented a certain new and useful Improvement in Locomotives, of which the following is a full, clear, concise, and exact description, reference being had to theaccompanying drawings, forming a part of this specification. v

This invention relates to improvements in locomotives.

In the present day operation of large, modern locomotives, numerous auxiliary devices are employed on the locomotive, as for instance, the air pump, stoker engine, dynamo turbine, and so on. Under the conditions which obtain, the steam consumption by these auxiliaries amounts to to of the total generated steam and it is high ly' desirable, for the purpose oteconomizing on fuel consumption, that these auxiliary devices be operated by super-heated steam,

such as is used fordriving the locomotive, so far as it is possible to do so, and to use the saturated steam for the auxiliary devices only when necessary.

I am aware that attempts to accomplish the foregoing have heretofore been made. Such former attempts as I am aware of may be divided into two general classes. One of these involves the location of the main throttle valve between the usual super-heater and the cylinder chest. iug and valve controls, it is possible with this arrangement to supply super-heated steam to the auxiliary devices at all times, but this arrangement is not readily adapted to modern types of locomotives wherein it is customary to locate the super-heater atthe front end of the boiler. lVitli the arrangement referred to, it is obvious that thethrottle valve is located between the su per-heater and the cyilnder chest. the throttle valve must be of special construction to enable it to withstand the high temperature oi the superheated steam and, furthermore, the location of the throttle valve so far forward on the locomotive necessitates more complicated throttle operating rods and le-- vers running from the cab. Such an arrangement is very. costly even on new and the cost of installing such an arrangeauxiliary devices By suitable pipmotive cylinders,

locomotives ment' on existing locomotives is so excessive as to practically prohibit its consideration.

The other arrangement heretofore sug--, gested retains the main throttle valve between the steam dome and the super-heater with the usual saturated steam supply to turret in the. cab, and from which the saturated steam is distributed tothe various auxiliary devices. In this last arrangement referred to, however, the super-heated steam for the auxiliary devices is supplied from the super-heater individuallyto the various through the turret. \Vith such an arrangement, it will be evident that more separate lines of pipes and more control and check valves arerequired, thus increasing both the cost of original installation and the cost ot' maintenance because .oi the great number of parts involved. Furthermore, such an arrangement involves a departure from the cnstomary manner of controlling or shutting off the supply of steam,- either;

saturated or super-heated, to the auxiliaries, which is ordinarily done by the engineer at theusual turret located in the cab.

One object of my invention is toprovide an arrangement for locomotives of the socalled super-heated type, such as are embodied in the well known Mountain and Mikado types of locomotives, wherein all otthe steam required torthe auxiliary devices,- whether saturated or super-heated, depending upon the conditions of operation, is directly supplied to the turret before being distributed to the various auxiliary devices.

ilnother object of the invention. is to provide an a "rangement in a locomotive where.-

without being transmitted by super-heated steam is sapplied to all of y the auxiliary devices whenever the locomotive is running and, upon shutting off the supply of super-heated steam to the locomeans are automatically made eiiective for then supplying the auxiliary devices with saturated steam to the end of increasing the efficiency of the locomotive by reducing fuel consumption.

More specifically, an object of. my invention is to provide an arrangement of the character generally indicated in each of the two preceding paragraphs which may be readily. incorporated in new locomotives without[materially increasing cost or applied to existing locomotives of the larger, modern type without any material modification of the usual arrangement of parts and at relatively small expense.

A further specific object of the invention is to provide an arrangement of the character above indicated, wherein is employed an auxiliary valve for the saturated steam supplied from the usual steam dome to the turret, said auxiliary valve being located in the steam dome whereby the same is readily accessible for inspection or repair, as in the case of the main throttle valve as at present.

The invention furthermore consists in the improvements in the parts and devices and in the novel arrangements of the parts and devices herein shown, described and made the subject matter of claims.

in the drawings forming a part of this specification, Figure 1 is a top plan view, more or less diagrammatic, with certain parts of the boiler front extension in section. and illustrating the general arrangement of my improvements as applied to a large, modern locomotive. Figure 2 is a side elevation of a portion of a large, modern locomotive and illustrating the arrangement shown in Figure 1 as incorporated therein. In Figure 2, certain parts of the locomotive are broken away in order to more clearly illustrate features of the constru tion and in both Figures 1 and 2, parts are omitted to better accon'imodate the views on the sheet. Figure 3 is an enlarged side elevational view illustrating the main throttle valve, auxiliary valve and operating parts, illustrated in l igures 1 and 2. And Fignire 4C is a view similar to Figure 3, illustrating a somewhat ditl erent embodiment of the main throttle valve, auxiliary control valve and operating devices therefor.

Referring first to the construction illustrated in F igrures 1, 2 and 3, the locomotive is shown as having; the usual boiler proper 10, steam dome 11, front boiler tube sheet 12, stack 13, front extension 1%, super-heater header 15, steam turret 16, and outer sheathing or casing '17 is customary in large, modern locomotives, the main throttle valve indicated conve itionally at 18, located within the usual steam dome 11 and the super-heater header is disposed forwardly of the front tube sheet 12. Saturated steam is supplier from the steam dome through the throttle valve 18 and longitudinally and centrally disposed supply pipe '19 to the super-heater header. The latter, illustrated ionventitmally, in turn supplies the super-heated steam through two large pipes or conduits 20--2(), one on each side of the locomotive, to the usual steam chests, which I do not deem it necessary to illustrate. The throttle valve 18, illustrated conventionally, is of the usual balanced type and the valve proper 21 thereof is actuated in a vertical direction through laterally extended pins 22 rigid therewith, links 28, bell crank lever 24: and throttle rod 25, the latter leading back to the cab inthe usual manner.

In the large, modern locomotives, it is now customary to run two pipes 27-27 from the steam demo to the steam turret for the reason that it is diflicult to use a single large pipe on account of interfering with the usual stays. in carrying out my invention when two pipes 27' are used, I therefore employ an auxiliary control valve 28 in connection with each of said pipes 27. The control valves 28 are also illustrated COHYQH- tionally and are of the usual balanced type, the same being made of apprecia. ly lesser size than the throttle valve 18. Each of the auxiliary control valves 28 includes a main casing having suitable lugs or ears 29 by which it may be readily, but detachahly, mounted on the throttle valve 18 so that both valves are located within the steam dome or steam chamber and therefore readily available for exan'iination or repairs, as will be obvious.

Each of the auxiliary valves includes a valve proper 30 to which is pivotally connected a lever 31 fulcrumed on a suitable .xtension formed integral with the auxil iary valve casing. The opposite end of each lever 31, is pivotally connected to the respective pin 22, as best indicated in F igure By reason ofvertically elongated slots 26, provided in each lever 31, a predetermined amount of lost motion is allowed between the levers 31 and links 23 because of the greater movementnecessary, of the throttle valve proper 21 as compared with the smaller auxiliary valves pro er 30. The throttle valve proper 21 and th auxiliary valves proper 30 are so connected with the lever 31 that, when the throttle valve 21 is closed, the auxiliary valves proper 30, are open and vice versa. From the preceding description, it will be seen that, when the en 'ineer opens the main throttle valve, the auxiliary valves 28 will be closed or shut off, thus supplying saturated steam to the super-heater header and shutting off the supply of saturated steam to the turret. Conversely, when the throttle valve is closed, thus shutting otf the supply of saturated steam to the superheater header, saturate-d steam will be supplied to the turret.

To effect supply of super-heated steam to the turret when the locomotive is run ning', that is, when the throttle valve 18 is open, I run two pipes 33, one on each side of the locomotive, from the super-heater header to the turret, as best illustrated in Figure 1. Preferably, each of these pipes has included therein, adjacent the super-heater header, a shut-off valve Also included in each of the pipes 33 and preferably adjacent lit-J) proper therethrough to the turret,but operating to prevent saturated steam passing therethrough in the reverse direction when superheated steam is not being suppliedto the turret.

I have not deemed it necessary to illustrate any of the particular auxiliary steam consuming devices, but, as will be appreciated by those skilled have the steam distributed thereto from the turret through respective pipes as indicated at 36, and in which will be included the usual shut-off valves when it is desired to prevent the passage of any steam to any particular auxiliary device. a

From the preceding description, considered in connection with the drawing, it

will be seen that, when the locomotive is working and saturated steam is beingsupplied to the super-heater, all of the superheated steam for the auxiliary devices will be supplied direct to the turret and the source of saturated steam to the turret shut off. "When the locomotive is not working, that is, when the locomotive is drifting or is stationary, and the throttle valve 18 is closed, all of the saturated steam required for the auxiliary devices is supplied to the turret from which it may be distributed to said devices, while'at the same time saturated steam is prevented from flowing to the superheater by the check valves 35-35.

Referring to the construction illustrated in Figure4, 118 indicates the throttle valve having a valve proper 121. The auxiliary valve is indicated at 128. the same having a valve proper 180. The throttle valve proper 121 is operated through suitable links 128, which are pivotally connectedat their lower ends to a bell crank lever 124, one arm of which 124 is pivotally connected to the usual throttle rod 125. In this construction, the bell crank 124 is provided with an additional arm having a rounded end 51 which engages an anti-friction and weight roller 52 attached to the lower end of arod 53 that is connected at its upper end tothe auxiliary valve proper 180. Said rod 53'is suitably guided by depending flange of the auxiliary valve casing. In the modification shown in Figure 4. only a single auxiliary valve is employed with one pipe 127 leading to the turret as this construction will be preferable in some types of locomotives. In this modification, as clearly shown in Figure 4, the throttle valve 121 is closed and the auxiliary valve 130 is open. hen the throttle valve is opened by pulling the rod 125 toward the, left as viewed in Figure 4, it is obvious that the bellcrank lever ar m 5() will move downwardly thereby permlttmg the auxiliary valve proper 130 to fall and in the art, the same will throttle valve proper guide lugs 54 formed on a close the auxiliary valve. In this connection, it will be observed that, on account of the arrangement of crank arm 50 and roller 52, the necessary lost motion between the auxiliary and throttle valve proper is accommodated since the arm 50 can continue its downward movement after the auxiliary valve proper 130 is closed; From the preceding description, it will be seen'that my improvements may be readilyincorporated in new locomotives without material increase in cost and also that they may be incorporated in existing loco" motives without substantial change in the arrangemcntof existing parts, my improvements involving merely the addition of the pipes 33 between the super-heater and the turret and the introduction of the auxiliary valves 28 within the saturated steam supply pipes 27 for the turret, together with suitable operating mechanism between the 21' and the auxiliary valves proper to effect their simultaneous, but opposite movement's.

I have herein shown and described what I now consider the preferred manner of carrying out my invention, but the same is merely illustrative and I contemplate all. changes and modifications that come within the scope of-the claims appended hereto.

I claim:

1. In an apparatus of the-character dethe combination with a" super-heater; of

means for supplying saidsuper-heater with steam'from said source of steam supply; a main control'valve for said means; means adapted to supply an auxiliary steam'consuming device with saturated steam from said source of supply; means for supplying super-heated steam to said auxiliary steam consuming device, an auxiliary control valve for said means for supplying the saturated steam located adjacent said main control valve; and manually-operable means for actuating said main control valve, said auxiliary control valve operating to supply saturated steam when said means for supplying superheated steam is cut off, said auxiliarycontrol valve being operable in predetermined relation with said; main control valve so that when one'is open, the other is closed and vice versa.

2. In'an apparatus of the character de scribed having asource' of saturated steam supply and a main steam consuming device, the combination with a super-heater; of means for supplying said super-heater with steam from said source of steam supply; a main control valve for said means; means for supplying an auxiliary steam consuming device with super-heated steam, means adaptedgto supply said auxiliary steam consuming device with steam directly from said source 01 supply; an auxiliary control valve for said last named means located adjacent said main control valve; and manually operable means for actuating said main and auxiliary control valves sin'mltaneously, but oppositely. v

3. In locomotive having a super-heater, a throttle controlled pipe supplying it with steam from the boiler, and a turret from which steam is adapted to be distributed to an auxiliary steam consuming device; the combination with a valve controlled pipe for supplying said turret with steam from the boiler; of a super-heated steam direct supply pipe from said super-heater to said turret; and means operable to close said valve when the throttle is open and to open said valve when the throttle isclosed.

43111 a locomotive having a saturated steam supply chamber, super-heater, turret, said turret being arranged to supply steam to an auxiliary steam consuming device; means, automatically operable, for supply ing said turret with super-heated steam only when the locomotive is working and with saturated steam only when the locomotive is not working including, a throttle controlled conduit between said chamber and supcrheater.

5.111 a locomotive having a saturated steam supply chamber, super-heater, turret, said turret being arranged to supply steam to an a-urdliary steam consuming device; means, automatically operable, for supply ing said turret with super-heated steam only when the locomotive is working and with saturated steam only when the locomotive is not working, including a valve controlled conduit bet-ween said chamber and turret, a throttle controlled-conduit between said chamber and super-heaterand a check controlled conduit between said superheater and turret.

6. In a locoiinotive having a steam chamber, super-heater, turret, said turret being arranged to supply steam to an auxiliary steam consuming device; means for supplying said turret with supersheated steam only when the locomotive is working and with saturated steam only when the locomotive is not working including, a saturated steam supply pipe from said chamber to the super heater having a throttle valve included therein located within the chamber, and a saturated steam supply pipe from said chamber to the turret and having included therein an auxiliary control valve also located in the chamber.

7. In a locomotive having a steam chamber, super-heater, turret, said turret being adapted to supply an auxiliary steam consuming device; means for supplying said turret with super-heated steam only when the locomotive is working and with saturated steam only when the locomotive is not working including, a saturated steamsupply pipe from said chamber to the super-heater having a throttle valve included therein and located within the chamber, a saturated steam supply pipe from the chamber to the turret having an auxiliary control valve included therein and located also within the chamber, and operative connections between the valves proper of said throttl and auxiliary valves arran ed to simultaneously but oppositely actuate said valves proper when the throttle valve is operated.

8. In a locomotive having a steam chamber, super-heater, turret, said turret being arranged to supply an auxiliary steam oeusun'iing device; means for supplying said turret with super-heated steam only when the locomotive is working and with saturated steam only when the locomotive is not working including, a throttle valve comprising a casing and valve proper located within the chamber, a supply pipe "from said throttle valve to the super-heater, an auxiliary valve comprising a casing and a valve proper located within said chamber and detachably mounted on the. throttle control valve, a supply pipe from said auxiliary valve to the turret, and a pipe communicating with said super-heater and turret having a check valve included therein.

9. In a locomotive having a steam cham ber, super-heater, turret said turret being arranged to supply an auxiliary steam consuming device; means for supplying said auxiliary device with super-heated steam when the locomotive is working and with saturated steam when the locomotive is not working including, a saturated steam supply pipe from said chamber to the super-heater having a throttle valve included therein and located within the chamber; and a saturated steam supply pipe leading trom said chamber to the turret and having included therein an auxiliary control valve also located in the chamber.

10. As an article of manufacture, a twoway valve comprising: a main valve having a valve proper and a valve casing provided with admission and delivery means; an auxiliary valve having a valve proper and valve casing provided with admission and delivery means whereby the steam may be taken from the same steam chamber and delivered separately through either valve to ditlerent steam consuming devices; and operating mechanism associated with said two valves proper arranged to move each of said valves proper to open and closed position, said operating mechanism effecting closure of one of said valves proper and simultaneous opening of the other and vice versa.

11. In a locomotive having a steam chamber, super-heater, turret for supplying steam to auXil-iarydevices; means for supplying the turret with super-heatedsteam when the locomotive is working and with saturated steam when the locomotive is not working including: a saturated steam supply pipe from said chamber tothe super-heater having the throttle valve included therein; and a pair of saturated steam supply pipes leading from said chamber to the turret and each having included therein, an auxiliary control valve.

12. Ina locomotive having a super-heater, a throttle controlled pipe supplying it'with steam from the boiler; a turret from which steam is distributed to auxiliary device; the combination with a pair of pipes for supplying said turret with steam from the boiler, each of said pipes having a control valve ineluded therein; of a super-heated steam direct. supply pipe from said super-heater to said turret; and means operable to close said valves when the throttle is opened an'd to open said valves when the throttle is closed.

18. In a locomotive having a saturated steam supply chamber super-heater; and

'turret forsupplying auxiliary steam consuming devices; means, automatically operable, for supplying said turret with superheated steam only when the locomotive is working and with saturated steam-only when thelocomotive is not working including, a

throttle controlled conduit between said chamber and super-heater, and duplicated valve controlled conduits between said chamher and turret.

14. In a locomotive having a steam chamday of July 1923.

her, the combination with a main throttle disposed within a valve proper; of an auxiliary valve also 7 located in said chamber and including a valve proper; and manually operable means for actuating both of said valves proper to positively open and closethe same, said means operating said main and auxiliary valves proper simultaneously, but oppositely, said neans including therein a between said throttle valve proper and auxiliary valve proper to permit greater movement of the throttle valve proper than the auxiliary valve proper.

15. In a locomotive having a saturated steam supply chamber, super-heater; and turret, said turret being arranged to supply auxiliary steam consuming devices; of a pipe rated steam; a main valve for regulating the for supplying saturated steam to said turret; an auxiliary valve for controlling the passage'of saturated steam to said turret; means connecting said super-heater with said turrot; and operating mechanism associated with said main and auxiliary valves toefiect closure of one of said valves and simultaneous opening of the other, and vice versa.

In witness that I claim the foregoing I ave hereuntosub'scribed my name this 3rd JOHN L. MOHUN.

said chamber and including lost motion device 7 tor supplying said super-heater with satu- 

